Tech Thursday: HTML5, 404 pages, 12 steps, 10 things, and the wisdom of codepo8

This week's batch of Tech Thursday links checks in from Atlanta, Georgia:

* The World-Wide Web Consortium (W3C) has unveiled a new logo for HTML5.

* A slideshow of 35 entertaining 404 error pages and 35 more.

* A way to display HTML5 elements in Internet Explorer without using JavaScript.

* Mobile comparison table between Adobe Air for mobile, Titanium Appcelerator and PhoneGap.

* Sprite.js, a framework that lets you create animations and games using sprites in an efficient way.

* Want to use MVC with JavaScript? Check out Backbone.js or JavaScriptMVC.

* 12 steps to a better landing page infographic.

* How to build cross-browser HTML5 forms.

* Slides and notes from @codepo8 recent lecture at MIT on HTML5 Video.

* Ten things you can do to become a better PHP developer.

* Mom, this is how Twitter works.